18 free tools
Developer tools
Format, validate, encode, decode, and debug common developer data.
JSON Formatter
Format, validate, minify, recursively sort, and inspect JSON in real time with precise parse errors.
DeveloperJSON Validator
Validate JSON syntax and pinpoint the first parsing error.
DeveloperRegex Tester
Test regular expressions, flags, matches, and capture groups live.
DeveloperBase64 Encoder
Encode Unicode text to Base64 locally in your browser.
DeveloperBase64 Decoder
Decode Base64 data into readable Unicode text.
DeveloperURL Encoder
Percent-encode text safely for query strings and URLs.
DeveloperURL Decoder
Decode percent-encoded URL components into readable text.
DeveloperHTML Entity Encoder
Escape reserved HTML characters to safe entities.
DeveloperHTML Entity Decoder
Decode HTML entities back to their original characters.
DeveloperUUID Generator
Generate secure RFC 4122 version 4 UUIDs in bulk.
DeveloperUUID Validator
Validate UUID format and identify its version.
DeveloperHash Generator
Create SHA-1, SHA-256, SHA-384, or SHA-512 hashes locally.
DeveloperJWT Decoder
Decode JWT headers and payloads without transmitting the token.
DeveloperCron Expression Explainer
Translate standard five-field cron expressions into plain English.
DeveloperColor Converter
Convert HEX, RGB, and HSL colors with an accessible visual preview.
DeveloperSQL Formatter
Format common SQL statements and clauses for readability.
DeveloperYAML to JSON Converter
Convert YAML to JSON or JSON to YAML locally.
DeveloperHTTP Status Code Lookup
Look up the meaning and class of common HTTP response codes.
Developer